不同身體負載運動對女性運動員骨質密度與骨骼代謝之影響

The Effects of Different Weight-bearing Exercise on Bone Mineral Density and Bone Metabolism in Female Athletes

林麗娟(Linda L. Lin)

《體育學報》 38卷1期 (2005/03) Pp. 69-87

https://doi.org/10.6222/pej.3801.200503.1207

摘要

Purpose: To examine the effects of different weight-bearing exercise on bone mineral density and markers of bone turnover in female athletes. Method: Thirty-three female subjects were assigned into 3 groups with age-, weight-, and height-matched and according to their exercise type (runner n=11, swimmers n=10 and control group n=12). Subjects in experimented groups were asked to exercise at least three times a week and have at least three years of running and swimming training. As for control group, subjects must not have exercise regularly within a year. Duel-energy X-ray absorptiometry (DXA) was used to measure subjects' arms, legs, ribs, pelvis, lumbar spine, femoral neck, and total body bone mineral density (BMD). Subjects were asked to perform endurance exercises (VO2 max). The blood pH, total serum calcium, ionized calcium, parathyroid hormone (PTH), calcitonin (CT), osteocalcin, intact N-terminal propeptide of type I collagen (PINP), and carboxyterminal telopeptide of type I collagen (ICTP) were measured before and after exercise. One-way ANOVA and two-way ANCOVA were used for data analysis. Results: (1) The BMD of runner was significantly higher than the control group in total body and site-specific BMD (p＜.05). The runners' spine, pelvis, legs, lumbar spine, and total body BMD were significantly higher than the swimmers (p＜.05). (2) The osteocalcin of bone formation marker in runner and swimmer were significantly higher than the control group (p＜.05). The marker of bone resorption was not different between groups before and after exercise. (3) The osteocalcin of bone formation marker in the runners was significantly higher than the swimming group (p＜.05). Conclusions: The PTH increased after exercise and force out the ionized calcium from the bone which has negative effect on bone formation for the swimmers. The running group has the highest VO2 max and the best of bone density, and the osteocalcin also ascend significantly after regular or acute exercise which contribute to good bone formation ether use weight-bearing, mechanical loading or biochemical markers.

關鍵字

身體負載 ； 運動 ； 骨質密度 ； 骨骼代謝

並列摘要

Purpose: To examine the effects of different weight-bearing exercise on bone mineral density and markers of bone turnover in female athletes. Method: Thirty-three female subjects were assigned into 3 groups with age-, weight-, and height-matched and according to their exercise type (runner n=11, swimmers n=10 and control group n=12). Subjects in experimented groups were asked to exercise at least three times a week and have at least three years of running and swimming training. As for control group, subjects must not have exercise regularly within a year. Duel-energy X-ray absorptiometry (DXA) was used to measure subjects' arms, legs, ribs, pelvis, lumbar spine, femoral neck, and total body bone mineral density (BMD). Subjects were asked to perform endurance exercises (VO2 max). The blood pH, total serum calcium, ionized calcium, parathyroid hormone (PTH), calcitonin (CT), osteocalcin, intact N-terminal propeptide of type I collagen (PINP), and carboxyterminal telopeptide of type I collagen (ICTP) were measured before and after exercise. One-way ANOVA and two-way ANCOVA were used for data analysis. Results: (1) The BMD of runner was significantly higher than the control group in total body and site-specific BMD (p＜.05). The runners' spine, pelvis, legs, lumbar spine, and total body BMD were significantly higher than the swimmers (p＜.05). (2) The osteocalcin of bone formation marker in runner and swimmer were significantly higher than the control group (p＜.05). The marker of bone resorption was not different between groups before and after exercise. (3) The osteocalcin of bone formation marker in the runners was significantly higher than the swimming group (p＜.05). Conclusions: The PTH increased after exercise and force out the ionized calcium from the bone which has negative effect on bone formation for the swimmers. The running group has the highest VO2 max and the best of bone density, and the osteocalcin also ascend significantly after regular or acute exercise which contribute to good bone formation ether use weight-bearing, mechanical loading or biochemical markers.

並列關鍵字

weight-bearing ； exercise ； bone mineral density ； bone metabolism

參考文獻

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